Valve



Sept. s,4 1925.

F. A. WARTER VALVE Filed Dec. 2s, 1921 Patented Sept. .8, 1925.

UNITED STATES PATENT OFFICE. s

FRANK A. WARTER, OF WOODBRIDGE, NEW JERSEY, ASSIG-NOR OF ONE-HALF TCHARLES ANNESS, OF WOODBRIDGE, NEW JERSEY.

VALVE.

Application filed December 28, 1921. VSerial No. 525,296.

T o all whom t may concern: Y

Be it known that I, FRANK A. WARTER, a citizen of the United States, anda resident of Woodbridge, county of Middlesex, and

i State of New Jersey, have invented certain new and useful Improvementsin Valves, of which the following is a specification.

This invention relates to an, improved valve which is adapted fordifferent uses,

but in order to make the invention clear is described herein as appliedto a valve used in acid and similar pipe lines.

The object of the invention is to provide a valve which has the facewhich engages the seat constructed so that the valve takes upinequalities due to the improper machining or aligning of the seat orstem, and the valve is thus enabled to remove strain from these parts inany attempt to force it shut and also to make a complete closure.

The invention is illustrated in the accompanying drawing, in whichFigure 1 is a section, partly in elevation, of a valve embodying myinvention. Figure 2 is a detail view of the valve parts shown in Figure1, separated, one part being shown in section. Figure 3 is a sectionalview of a modied form of valve.

So far as the main parts of the valve illustrated are concerned, theyare not new, as I show a conventional valve casing 10 with the passage11 through it and a bonnet 12 in which the stem 13 slides, beingactuated by suitable means, such as the hand wheel 14 on :55 the head15.

The bonnet and the part 10 in acid valves are made of or lined with leador similar acid-resisting material, and the valve casing has a valveseat 16 which is adapted to be closed by the valve on the end of thestem.

That face of the valve that engages the seat 16 can be made as inFigures 1 and 2, in which I show a lead ring 17 of tubular form which issecured, by burning, on the end of the lead head 18, which is theextension of the covering 19 of the stem 13. When the tube is burned on,lead is accumulated around the tubular part 17 and within the spaceenclosed thereby to give it good stability and adherence to the head 18,as shown in Figure 1, but leaving the lower edge comparatively thin.This structure forms an air chamber or cushion 20. The head 18 and thetube 17 when put together as shown in Figure 1, form a one-piece orintegral structure, the additional lead that is burned on when the partsare assembled forming not only a backing for the tube 17 bystrengthening the back part, but also making a substantial and solidfastening means so that the two separated elements shown in Figure 2form the integral structure shown in Figure 1.

It will be readily seen that when the valve parts are assembled, anyinequality of alignment of the valve stem, or improper machining of theparts, or any improper facing or lining of the valve seat or valve stemthat causes the valve 17 to be improperly seatedon t-he valve seat atfirst contact, is compensated for by the cushioning of the valve.

The somewhat flexible ring 17 is compressed at the points of firstcontact, and a uniform tight seat is provided. The air cushion insidethe ring 17 allows the compression of the valve, and since the thinwalls of the part 17 are usually made of softer metal than the valveseat, the seat is not injured or unevenly worn. A new valve and stem canbe readily installed without regrinding the valve when an old one isworn out, as it is not necessary to machine the body of the valve andits valve seat. In fact, it is not necessary to do any machiningwhatever on the insertion of a new valve and stem as the initial seatingof the valve will cause it to conform to the seat.

In Figure 3 I show a modified form of valve in which a soft flexiblecushion disk or block 21 of leather, rubber, asbestos or similarresilient material is placed in the end of the cover of the valve stemand is covered on the outside by a thin, somewhat flexible sheet 22 ofsheet lead so as to form an integral part of the lead valve head for usein chemical solution processes where liquid, fumes, vacuum or vapor ofcorrosive nature are conducted. 'Ihe cushion 21 is of sufficientflexibility to compensate for indenting or distorting the face 22 of thevalve.

I claim:

1. A valve comprising a casing having 4al seat therein, a valve to closethe seat, a stem for the valve, the valve comprising a single piece oflead enclosing the stem and formed 105 beyond the stem with a hollowportion,'the walls of which are of sufficient thinness t0 permit ofslight distortion.

2. A valve comprising a casing having a seat therein, a valve to closethe seat, said 110 Valve having a one-piece head with a closed` thinouter end, and a cushioning block in space arranged in said head nearits oontaetsaid head and protected thereby from fluid ing face, and acushion material in said porpassng through the valve. 10 tion. Intestimony that I cla-im the foregoing, I

3. A valve comprising a casing having a have hereto set my hand, this24th clay of seat therein, a valve to close the seat, said December,1921. valve having a one-piece hollow head with a F. A. VVARTER.

